JP6542762B2 - Regulator for flow controller - Google Patents

Regulator for flow controller Download PDF

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JP6542762B2
JP6542762B2 JP2016522450A JP2016522450A JP6542762B2 JP 6542762 B2 JP6542762 B2 JP 6542762B2 JP 2016522450 A JP2016522450 A JP 2016522450A JP 2016522450 A JP2016522450 A JP 2016522450A JP 6542762 B2 JP6542762 B2 JP 6542762B2
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adjustment
disc
detent
adjusting
selection wheel
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JP2016523153A (en
JP2016523153A5 (en
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ハスルベック・カーステン
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B Braun Melsungen AG
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A61M5/16881—Regulating valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/286—Wedge clamps, e.g. roller clamps with inclined guides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3156—Mechanically operated dose setting member using volume steps only adjustable in discrete intervals, i.e. individually distinct intervals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • F16K35/04—Means to prevent accidental or unauthorised actuation yieldingly resisting the actuation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3334—Measuring or controlling the flow rate

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pulmonology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Braking Arrangements (AREA)
  • Transplanting Machines (AREA)

Description

本発明は、医療用流体搬送システムの流量（Flussrate）を調節する調節装置に関する。   The present invention relates to a regulator for regulating the flow rate of a medical fluid delivery system.

医療用流体搬送システムとして、例えば、注入療法用の注入装置や、患者に鎮痛剤を注入するのに用いられる注入装置等が挙げられる。このような流体搬送システムを使用する際には、流体の搬送に用いる複数の可能流量のうちの１つを選択・設定する必要がある。流体の搬送に用いる流量の調節は、高い精度と信頼性で実行されなければならない。特に注入装置では、誤った設定が過量投与または過少量投与につながり、患者にとって重大な結果を招く恐れがある。   Examples of medical fluid delivery systems include infusion devices for infusion therapy and infusion devices used to infuse analgesics into patients. When using such a fluid transfer system, it is necessary to select and set one of a plurality of possible flow rates used to transfer the fluid. Adjustment of the flow rate used to transport the fluid must be performed with high accuracy and reliability. Especially in the case of infusion devices, misconfiguration can lead to overdosing or underdosing, which can have serious consequences for the patient.

流量の調節は、回転式の制御装置（Drehregler）によって行うことが知られている。この場合、複数の可能流量のうちの１つを選択する選択ホイール（Waehlrad）が設けられる。この選択ホイールには、選択された流量を調節する調節ディスク(Stellscheibe)が、その選択ホイールと共に回転が可能なように固定的に接続される。この配置構成において、その調節ディスクの径方向外縁（aeusseren Rand）は、デテント（Fangnase）と協働する。これらデテントと調節ディスクとの係合は、デテントが調節ディスクを（したがって、選択ホイールも）、所望の流量を調節するのに要求される各回転位置にロックするように構成されている。   The regulation of the flow is known to be performed by means of a rotary control (Drehregler). In this case, a selection wheel (Waehlrad) is provided which selects one of a plurality of possible flow rates. An adjustment disc (Stellscheibe) for adjusting the selected flow rate is fixedly connected to the selection wheel so as to be rotatable with the selection wheel. In this arrangement the radial outer edge of the adjustment disc cooperates with the detent (Fangnase). The engagement of these detents with the adjustment disc is configured such that the detent locks the adjustment disc (and hence also the selection wheel) in each of the rotational positions required to adjust the desired flow rate.

既知の調節装置の問題点は、装置が各流量の隣り合う調節位置の間の途中点に設定されてしまって、これらの流量のいずれも選択されないという状況が起こり得る点である。このような場合、誤って設定された途中位置は、設定されたまま維持される。これは、調整メカニズムにもよるが、流体の最大搬送または流体の非搬送につながり得る。このことは特に、注入によって行われる治療の際に、患者にとって重大な結果を招きかねない。   A problem with known regulators is that situations can arise where the device has been set to a midpoint between adjacent regulation positions of each flow rate and none of these flow rates are selected. In such a case, the halfway position set incorrectly is maintained as it is set. This can lead to maximum delivery of fluid or no delivery of fluid, depending on the adjustment mechanism. This can have serious consequences for the patient, especially in the treatment performed by infusion.

本発明の目的の一つは、医療用流体搬送システムの流量を調節する、改良された調節装置を提供することである。   One of the objects of the present invention is to provide an improved control device for controlling the flow rate of a medical fluid delivery system.

本発明にかかる調節装置は、請求項１で定義された構成によって定められる。具体的に述べると、調節ディスクが、星形状とされる。星形状（Sternform）のデザインは、調節ディスクに、最大半径を持つ複数の領域と最小半径を持つ複数の領域とを含む径方向外縁を有する回転対称形状を与える。この径方向外縁が最大半径を持つ領域は「山頂」(Gipfel)と称することができ、最小半径を持つ領域は「谷間」(Taeler)と称することができる。調節ディスクが前記星形状である結果、それら谷間と山頂とは、交互に入れ替わる。デテント（detent）と調節ディスクの前記星形状とが協働することで、デテントが谷間に係合すると調節ディスクの安定な位置が生じて、デテントが山頂に係合すると不安定な位置が生じる。この点に関して言えば、山頂が一定の半径を有するのではなく、近隣の山頂に向かうにつれて減少する最小半径を有していることが重要なのである。これにより、デテントが山頂に係合した際に、調節ディスクの不安定な位置が得られる。谷間は、各流量の調節に用いる回転位置を得る役割を果たす一方、途中の山頂は、設定可能流量の互いに隣り合う回転位置の、あいだにある回転点に相当する。これにより、隣り合う流量の間にある回転位置が誤って設定されても、調節ディスクの不安定な回転位置が引き起こされることになる。   The adjustment device according to the invention is defined by the arrangement defined in claim 1. Specifically, the adjusting disc is star-shaped. The Sternform design provides the adjustment disk with a rotationally symmetrical shape having a radially outer edge that includes areas with a maximum radius and areas with a minimum radius. The area where the radial outer edge has the largest radius may be referred to as the "peak", and the area with the smallest radius may be referred to as the "valley" (Taeler). As a result of the fact that the adjustment disc is in the shape of a star, the valleys and peaks alternate with each other. The cooperation between the detent and the star shape of the adjustment disc results in a stable position of the adjustment disc when the detent engages in the valley and an unstable position when the detent engages the summit. In this regard, it is important that the peaks do not have a constant radius, but have a minimum radius that decreases towards the neighboring peaks. This results in an unstable position of the adjustment disc when the detent engages the summit. The valleys serve to obtain the rotational position used to adjust each flow rate, while the peak in the middle corresponds to the rotational point located between the adjacent rotational positions of the settable flow rate. This leads to an unstable rotational position of the adjustment disc, even if the rotational position between adjacent flow rates is incorrectly set.

ばねの力に抗して支持されており、かつ、そのばねによって調節ディスクの径方向外縁に押し付けられるデテントには、前記径方向外縁に対して隣り合う谷間の間の場所で当接したときに前記ばねの力が調節ディスクを当該調節ディスクの不安定な位置外へと回転させることでデテントを谷間へと（したがって、安定な位置へと）移動させるという効果がある。この配置構成において、デテントは、スパイラルスプリングにおける突部として（例えば、尖った先端を有する三角形状の突部等として）形成され得る。変形例として、デテントは、ばねに（例えば、スパイラルスプリング等に）接続されたスパイクとして形成され得る。   The detent, which is supported against the force of the spring and which is pressed against the radial outer edge of the adjustment disc by the spring, when it abuts against the radial outer edge at a location between adjacent valleys The force of the spring has the effect of moving the detent into a valley (and thus into a stable position) by rotating the adjusting disc out of the unstable position of the adjusting disc. In this arrangement, the detent may be formed as a protrusion on the spiral spring (e.g., as a triangular shaped protrusion with a sharpened tip, etc.). As a variant, the detent may be formed as a spike connected to a spring (e.g. to a spiral spring etc.).

好ましくは、調節ディスクの前記星形状は、前記径方向外縁のジグザグ形状を生じさせて、そのジグザグ形状の隣り合った線が、互いに対して１０°〜１５５°の範囲内（より好ましくは、９０°〜１３５°の範囲内）の角度で傾いている。   Preferably, the star shape of the adjustment disc produces a zig-zag shape of the radially outer edge, the adjacent lines of the zig-zag shape being within a range of 10 ° to 155 ° (more preferably 90 ° to each other) Is inclined at an angle in the range of

以下では、本発明の例示的な一実施形態を、添付の図面を参照しながら詳細に説明する。   In the following, an exemplary embodiment of the invention will be described in detail with reference to the accompanying drawings.

調節装置を回転軸心の方向からみた図である。It is the figure which saw the adjustment apparatus from the direction of the rotating shaft center. 図１の矢印ＩＩの方向からみた図である。It is the figure seen from the direction of arrow II of FIG. 第１の回転位置での、図２の線ＩＩＩ−ＩＩＩに沿った断面図である。FIG. 3 is a cross-sectional view along line III-III of FIG. 2 in a first rotational position. 第２の回転位置での、図３と同様の断面図である。FIG. 5 is a cross-sectional view similar to FIG. 3 at a second rotational position. 図４においてＶで表された細部の詳細図である。FIG. 5 is a detail view of the detail represented by V in FIG. 4;

図１は、調節装置１０の図である。同図には、選択ホイール１２の表面の、そのホイールの回転軸心からみた様子が示されている。０〜７の数字が、選択ホイール１２の径方向外縁に沿って一定の相互間隔で付されている。これらの数字は、当該数字に対応する回転位置を表す。０〜７の数字は、それぞれ、設定可能な可能流量に割り振られている。０は流れがないことに相当し、７は最大の流れに相当する。   FIG. 1 is a diagram of an adjusting device 10. The figure shows the surface of the selection wheel 12 as viewed from the rotation axis of the wheel. The numbers 0 to 7 are given along the radial outer edge of the selection wheel 12 at a constant mutual spacing. These numbers represent rotational positions corresponding to the numbers. The numbers 0 to 7 are respectively assigned to settable possible flow rates. 0 corresponds to no flow, 7 corresponds to the maximum flow.

選択ホイール１２は、図１に示すように円形状であり、かつ、回転軸心１６回りに回転可能に支持されている。選択ホイール１２は、回転対称の調節ディスク１４に強固に接続されている。これにより、調節ディスク１４も、共通の回転軸心１６回りに回転可能となっている。選択ホイール１２および調節ディスク１４は、一体回転が可能であるように互いに固定的に連結されている。図１では、調節ディスク１４を、選択ホイール１２の裏に隠された構成要素として概略的に示している。   The selection wheel 12 is circular as shown in FIG. 1 and supported rotatably around the rotation axis 16. The selection wheel 12 is rigidly connected to the rotationally symmetrical adjustment disc 14. Thus, the adjustment disc 14 is also rotatable around the common rotation axis 16. The selection wheel 12 and the adjustment disc 14 are fixedly connected to one another so that they can rotate together. In FIG. 1, the adjustment disc 14 is schematically illustrated as a component hidden behind the selection wheel 12.

調節ディスク１４は、その外周に沿ってジグザグ線１８，２０により形成された星形状の輪郭を有している。この星形状は、図３及び図４に示すように、回転軸心１６に沿った視線方向で見ることができる。   The adjusting disc 14 has a star-shaped contour formed by the zigzag lines 18, 20 along its periphery. This star shape can be seen in a viewing direction along the axis of rotation 16 as shown in FIGS. 3 and 4.

調節ディスク１４の径方向外縁の前記ジグザグ線１８，２０は、直線であり、かつ、互いに対して約１１０°〜約１３０°の範囲内の面角（flachen Winkeln）で配置されている。隣り合うジグザグ線１８，２０同士は、それらの接触点において谷間２２および山頂２４を形成する。この構成において、径方向外側の先端として形成されているそれぞれの山頂２４は、最大半径を持つ点を形成する。同様に、径方向内側の先端として形成されているそれぞれの谷間２２は、最小半径を持つ点を形成する。全ての谷間２２の半径は互いに等しく、全ての山頂２４の半径も互いに等しい。   The zig-zag lines 18, 20 of the radial outer edge of the adjustment disc 14 are straight and are arranged at an angle of about 110 ° to about 130 ° relative to each other. Adjacent zigzag lines 18 and 20 form valleys 22 and peaks 24 at their contact points. In this configuration, each peak 24 formed as a radially outer tip forms a point with the largest radius. Similarly, each valley 22 formed as a radially inner tip forms a point with a minimum radius. The radii of all valleys 22 are equal to one another, and the radii of all peaks 24 are also equal to one another.

調節ディスク１４の、星形状の径方向外縁の前記ジグザグ線１８，２０は、デテント２６によって係合される。デテント２６は、図３〜図５に示すように、スパイラルスプリング２８の三角形状の先端として形成されている。例示的な本実施形態において、スパイラルスプリング２８は、屈曲板ばね（geknickte Blattfeder）である。スパイラルスプリング２８は、デテント２６を調節ディスク１４に対して径方向内側へと、図３及び図４の矢印３０の方向で、押し付けるばね力を生成するように、調節ディスク１４との関係で配置されている。   The zig-zag lines 18, 20 of the star-shaped radially outer edge of the adjustment disc 14 are engaged by the detent 26. The detent 26 is formed as a triangular tip of the spiral spring 28 as shown in FIGS. 3 to 5. In the present exemplary embodiment, the spiral spring 28 is a geknickte Blattfeder. The spiral spring 28 is arranged in relation to the adjustment disc 14 so as to generate a spring force which presses the detent 26 radially inward with respect to the adjustment disc 14 in the direction of the arrow 30 in FIGS. 3 and 4. ing.

図３に、スプリング２８がデテント２６を前記星形状における谷間２２へと押圧する、調節ディスク１４の安定な位置が示されている。選択ホイール１２を回してこの調節ディスク１４を回転させるには、スパイラルスプリング２８がデテント２６を介して調節ディスク１４の外縁に加える力に対抗する力を印加する必要がある。隣り合う谷間の間にある途中位置への不用意な調節が行われた場合、調節ディスク１４は必ず不安定な位置に置かれる。図４及び図５に、途中位置の一例を示す。このような状況において前記星形状には、スパイラルスプリング２８の力の影響下にあるデテント２６が調節ディスク１４の縁を自身が前記谷間のうちの１つで静止するまで斜め方向に押圧して調節ディスク１４を回転させるという効果がある。これにより、隣り合う谷間の間にある途中位置への設定を防ぐことができる。
以下に本発明の態様を示す。
[態様１] 医療用流体搬送システムの流量を調節する調節装置（１０）であって、複数の可能流量のうちの１つを選択する選択ホイール（１２）と、前記選択ホイール（１２）に接続されており、所望の流量を調節するために設けられた調節ディスク（１４）と、前記調節ディスク（１４）の外縁と協働するデテント（２６）と、を備える、調節装置（１０）において、前記調節ディスク（１４）が、星形状を有することを特徴とする、調節装置（１０）。
[態様２] 態様１の調節装置（１０）において、前記星形状が、前記調節ディスク（１４）の径方向外縁のジグザグ形状を形成しており、当該ジグザグ形状が、山頂（２４）および谷間（２２）を含むことを特徴とする、調節装置（１０）。
[態様３] 態様２に記載の調節装置（１０）において、前記谷間（２２）のそれぞれが、前記選択ホイール（１２）及び前記調節ディスク（１４）の、各流量を調節するのに要求される回転位置のうちの１つに対応することを特徴とする、調節装置（１０）。
[態様４] 態様２または３に記載の調節装置（１０）において、前記山頂（２４）のそれぞれが、前記選択ホイール（１２）及び前記調節ディスク（１４）の、対応流量の互いに隣り合う２つの回転位置の、ちょうど間に位置した回転位置に対応することを特徴とする、調節装置（１０）。
[態様５] 態様２から４のいずれか一項に記載の調節装置（１０）において、前記ジグザグ形状の隣り合った線（１８，２０）が、互いに対して１０°〜１５５°の範囲内の角度で配置されていることを特徴とする、調節装置（１０）。
[態様６] 態様２から５のいずれか一項に記載の調節装置（１０）において、前記山頂（２４）および／または前記谷間（２２）は、それぞれ丸みが付けられていることを特徴とする、調節装置（１０）。
[態様７] 態様１から６のいずれか一項に記載の調節装置（１０）において、前記デテント（２６）は、スプリング（２８）の力に抗して、当該デテント（２６）と谷間（２２）との係合が前記調節ディスク（１４）の安定な位置を引き起こし、当該デテント（２６）と山頂（２４）との係合が前記調節ディスク（１４）の不安定な位置を引き起こすように支持されていることを特徴とする、調節装置（１０）。
[態様８] 態様１から７のいずれか一項に記載の調節装置（１０）において、前記デテント（２６）が、スパイラルスプリング（２８）における突部として形成されていることを特徴とする、調節装置（１０）。
[態様９] 態様７に記載の調節装置（１０）において、前記デテントが、スプリング（２８）に接続されたスパイクとして形成されていることを特徴とする、調節装置（１０）。 FIG. 3 shows the stable position of the adjustment disc 14 in which the spring 28 pushes the detent 26 into the valley 22 in the star shape. In order to turn the selection wheel 12 to turn this adjustment disc 14, it is necessary to apply a force against the force that the spiral spring 28 applies via the detent 26 to the outer edge of the adjustment disc 14. In the event of an inadvertent adjustment to an intermediate position between adjacent valleys, the adjustment disc 14 is always placed in an unstable position. 4 and 5 show an example of the halfway position. In such a situation the star shape is adjusted by the detent 26 under the influence of the force of the spiral spring 28 pressing the edge of the adjustment disc 14 diagonally until it rests in one of the valleys This has the effect of rotating the disc 14. This makes it possible to prevent the setting of the intermediate position between adjacent valleys.
Hereinafter, aspects of the present invention will be described.
[Aspect 1] A regulator (10) for regulating the flow rate of a medical fluid transfer system, which is connected to a selection wheel (12) for selecting one of a plurality of possible flow rates and the selection wheel (12) An adjusting device (10), comprising an adjusting disc (14) provided for adjusting a desired flow rate, and a detent (26) cooperating with an outer edge of the adjusting disc (14) Adjusting device (10), characterized in that said adjusting disc (14) has a star shape.
[Aspect 2] In the adjustment device (10) of aspect 1, the star shape forms a zigzag shape of the radial outer edge of the adjustment disc (14), and the zigzag shape includes crests (24) and valleys 22. An adjusting device (10), characterized in that it comprises 22).
[Aspect 3] In the adjustment device (10) according to aspect 2, each of the valleys (22) is required to adjust the flow rate of the selection wheel (12) and the adjustment disc (14). Adjustment device (10), characterized in that it corresponds to one of the rotational positions.
[Aspect 4] In the adjustment device (10) according to aspect 2 or 3, each of the peaks (24) includes two adjacent ones of the corresponding flow rate of the selection wheel (12) and the adjustment disc (14). Adjustment device (10), characterized in that it corresponds to a rotational position located exactly between them.
[Aspect 5] In the adjustment device (10) according to any one of aspects 2 to 4, the zigzag-shaped adjacent lines (18, 20) are in the range of 10 ° to 155 ° with respect to each other. Adjustment device (10), characterized in that it is arranged at an angle.
[Aspect 6] In the adjusting device (10) according to any one of Aspects 2 to 5, the peak (24) and / or the valley (22) are each rounded. , Adjustment device (10).
[Aspect 7] In the adjusting device (10) according to any one of the aspects 1 to 6, the detent (26) resists the force of the spring (28) and the detent (26) and the valley (22) Support such that engagement of the adjustment disc (14) causes a stable position of the adjustment disc (14) and engagement of the detent (26) with the summit (24) causes an unstable position of the adjustment disc (14). An adjusting device (10), characterized in that
[Aspect 8] In the adjustment device (10) according to any one of the aspects 1 to 7, the detent (26) is formed as a protrusion in a spiral spring (28), the adjustment Device (10).
[Aspect 9] In the regulation device (10) according to aspect 7, the detent is formed as a spike connected to a spring (28), the regulation device (10).

Claims (8)

患者に医療用流体を注入するための搬送装置を備えた医療用流体搬送システムの流量を調節する調節装置（１０）であって、
複数の可能流量のうちの１つを選択する選択ホイール（１２）と、
前記選択ホイール（１２）に接続されており、所望の流量を調節するために設けられた調節ディスク（１４）と、
前記調節ディスク（１４）の外縁と協働するデテント（２６）と、を備え、
前記選択ホイール（１２）と前記調節ディスク（１４）は、一体回転のために互いに連結固定されており、
前記調節ディスク（１４）が、山頂（２４）および谷間（２２）を含む星形状を有しており、
前記流体は、選択された回転位置に相当する流量で、前記搬送装置から患者に注入されるように、構成されている調節装置（１０）であって、
前記デテント（２６）は、スプリング（２８）の力に抗して、当該デテント（２６）と
前記谷間（２２）との係合が前記調節ディスク（１４）の安定な位置を引き起こし、当該デテント（２６）と前記山頂（２４）との係合が前記調節ディスク（１４）の不安定な位置を引き起こすように支持されていることを特徴とする、調節装置（１０）。 A regulator (10) for regulating the flow rate of a medical fluid delivery system comprising a delivery device for injecting a medical fluid into a patient, comprising:
A selection wheel (12) for selecting one of a plurality of possible flow rates;
An adjustment disc (14) connected to the selection wheel (12) and provided to adjust the desired flow rate;
E Bei a detent (26) that cooperates with the outer edge of the adjusting disc (14),
The selection wheel (12) and the adjustment disc (14) are connected and fixed to one another for integral rotation;
Said adjusting disc (14) has a star shape comprising peaks (24) and valleys (22) ;
An adjusting device (10) configured to inject said fluid from said delivery device into a patient at a flow rate corresponding to a selected rotational position,
The detent (26) resists the force of the spring (28) and
The engagement with the valley (22) causes a stable position of the adjustment disc (14), and the engagement between the detent (26) and the peak (24) causes an unstable position of the adjustment disc (14). An adjusting device (10), characterized in that it is supported to cause . 請求項１に記載の調節装置（１０）において、前記星形状が、前記調節ディスク（１４）の径方向外縁のジグザグ形状を形成していることを特徴とする、調節装置（１０）。 In the regulation device (10) according to claim 1, wherein the star shape, and wherein said conditioning disk to form a zigzag shape in the radial outer edge (14) Turkey, adjustment device (10). 請求項２に記載の調節装置（１０）において、前記谷間（２２）のそれぞれが、前記選択ホイール（１２）及び前記調節ディスク（１４）の、各流量を調節するのに要求される回転位置のうちの１つに対応することを特徴とする、調節装置（１０）。   The adjusting device (10) according to claim 2, wherein each of the valleys (22) is the rotational position of the selection wheel (12) and the adjustment disc (14) required to adjust the respective flow rates. Adjustment device (10), characterized in that it corresponds to one of them. 請求項２または３に記載の調節装置（１０）において、前記山頂（２４）のそれぞれが、前記選択ホイール（１２）及び前記調節ディスク（１４）の、対応流量の互いに隣り合う２つの回転位置の、ちょうど間に位置した回転位置に対応することを特徴とする、調節装置（１０）。   Adjustment device (10) according to claim 2 or 3, wherein each of the peaks (24) is of two rotational positions of the selection wheel (12) and of the adjustment disc (14) adjacent to each other with corresponding flow rates. An adjusting device (10), characterized in that it corresponds to the rotational position located just between them. 請求項２から４のいずれか一項に記載の調節装置（１０）において、前記ジグザグ形状の隣り合った線（１８，２０）が、互いに対して１０°〜１５５°の範囲内の角度で配置されていることを特徴とする、調節装置（１０）。   Adjustment device (10) according to any one of claims 2 to 4, wherein said zigzag-shaped adjacent lines (18, 20) are arranged at an angle within the range of 10 ° to 155 ° with respect to each other. An adjusting device (10), characterized in that 請求項２から５のいずれか一項に記載の調節装置（１０）において、前記山頂（２４）および／または前記谷間（２２）は、それぞれ丸みが付けられていることを特徴とする、調節装置（１０）。   Adjustment device (10) according to any one of the claims 2 to 5, characterized in that the peaks (24) and / or the valleys (22) are respectively rounded. (10). 請求項１から６のいずれか一項に記載の調節装置（１０）において、前記デテント（２６）が、スパイラルスプリング（２８）における突部として形成されていることを特徴とする、調節装置（１０）。 In the regulation device according to any one of claims 1 6 (10), said detent (26), characterized in that it is formed as a protrusion in the spiral spring (28), adjusting device (10 ). 請求項１に記載の調節装置（１０）において、前記デテントが、スプリング（２８）に接続されたスパイクとして形成されていることを特徴とする、調節装置（１０）。 Adjustment device (10) according to claim 1 , characterized in that the detent is formed as a spike connected to a spring (28).
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